1671020465 has 8 divisors (see below), whose sum is σ = 2005629120. Its totient is φ = 1336546672.

The previous prime is 1671020453. The next prime is 1671020471. The reversal of 1671020465 is 5640201761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1671020465 - 2¹⁸ = 1670758321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4085 + ... + 57954.

It is an arithmetic number, because the mean of its divisors is an integer number (250703640).

Almost surely, 2^1671020465 is an apocalyptic number.

It is an amenable number.

1671020465 is a deficient number, since it is larger than the sum of its proper divisors (334608655).

1671020465 is an equidigital number, since it uses as much as digits as its factorization.

1671020465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67431.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1671020465 is about 40878.1171900077. The cubic root of 1671020465 is about 1186.6626035697.

The spelling of 1671020465 in words is "one billion, six hundred seventy-one million, twenty thousand, four hundred sixty-five".